EPSG systems

EPSG:2250 NAD83 / Massachusetts Island (ftUS)

Projected system (Lambert Conic Conformal (2SP)) in use: USA - Massachusetts - SPCS - islands. The full definition below, and conversion in one click.

System record
CodeEPSG:2250
NameNAD83 / Massachusetts Island (ftUS)
TypeProjected system — Lambert Conic Conformal (2SP)
Area of use USA - Massachusetts - SPCS - islands
United States (USA) - Massachusetts offshore - counties of Dukes; Nantucket.
Bounds W -70,91° · S 41,19° · E -69,89° · N 41,51°
Countries United States
DatumNorth American Datum 1983
Ellipsoid GRS 1980 a = 6378137 m · 1/f = 298.257222101
Base geographic system EPSG:4269 — NAD83
Unit US survey foot (X east, Y north)
Transformation to WGS 84 NAD83 to WGS 84 (1) (EPSG:1188) — accuracy 4 m
ScopeEngineering survey, topographic mapping.

Projection parameters

ParameterValueUnit
Latitude of false origin41degree
Longitude of false origin-70.5degree
Latitude of 1st standard parallel41.483333333333334degree
Latitude of 2nd standard parallel41.28333333333333degree
Easting at false origin1640416.667US survey foot
Northing at false origin0US survey foot

proj4 definition

+proj=lcc +lat_0=41 +lon_0=-70.5 +lat_1=41.4833333333333 +lat_2=41.2833333333333 +x_0=500000.0001016 +y_0=0 +a=6378137 +rf=298.257222101 +units=us-ft +towgs84=0,0,0 +no_defs

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:2250.

WKT (ESRI format, the .prj content)

PROJCS["NAD_1983_StatePlane_Massachusetts_Island_FIPS_2002_Feet",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",1640416.667],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-70.5],PARAMETER["Standard_Parallel_1",41.4833333333333],PARAMETER["Standard_Parallel_2",41.2833333333333],PARAMETER["Latitude_Of_Origin",41.0],UNIT["US survey foot",0.304800609601219]]

All systems — United States

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.